Biology Forums - Study Force

The lacy crystals of the ____ bone are tapped to raise blood calcium when the supply from the day's diet runs short.
 a. nerve tissue
 b. red blood cells
  c. trabecular bone
  d. cortical bone
 e. kidney tissue

Q. 2

Which ethnic group has the lowest risk for osteoporosis?
 a. Asians
 b. Hispanics
 c. Caucasians
 d. Africans
 e. There is no association between osteoporosis risk and ethnicity.

Q. 3

The strongest genetic influence on the development of osteoporosis is:
 a. the maximum bone mass that can be attained during growth.
  b. its influence over the absorption rate of vitamin A.
 c. its influence over the amount of bone lost in early adulthood.
  d. its effect on estrogen production in young women.
 e. its influence over absorbing and employing vitamin D.

Q. 4

Which group of food items will provide the best source of calcium in the diet?
 a. milk, yogurt, and ice milk
 b. kefir, butter, and cottage cheese
 c. buttermilk, cream cheese, and almonds
  d. cheese, cream, and broccoli
 e. spinach, grains, and cheese

Q. 5

Copper is an essential nutrient because of its role in:
 a. forming hemoglobin and collagen.
  b. increasing free radical activity.
 c. regulating zinc absorption.
 d. regulating blood glucose.
 e. regulating absorption of chromium.

Q. 6

What is currently known about fluoride in drinking water supplies?
 a. All bottled water contains fluoride added as part of the bottling process.
 b. Scientific evidence has shown that communities with fluoridated water have higher cancer rates.
  c. Very few communities in the U.S. have fluoridated water.
 d. In communities where fluoride is lacking in the water there is a high dental decay rate.
  e. Where the water supply contains too little fluoride, discoloration of the teeth occurs due to fluorosis.

Q. 7

Which statement about selenium levels in the body is accurate?
 a. Men with high blood levels of selenium from taking supplements have decreased cancer risk.
  b. Many healthy, well-fed people have a hidden selenium deficiency.
 c. There is no danger of toxicity when taking selenium supplements.
 d. It is difficult to obtain enough selenium from foods in the diet.
 e. Selenium works with a group of enzymes to protect body compounds from oxidative damage.

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